LENS BARREL,申请号JP20040023096-传众专利搜索

LENS BARREL

申请公布号：JP2005215416(A)

申请号：JP20040023096

申请日期：2004.01.30

申请公布日期：2005.08.11

申请人：

SEIKO INSTRUMENTS INC

发明人：OZAWA AKIO;KITAJIMA HIDEKI

分类号：G02B7/04;(IPC1-7):G02B7/04

主分类号：G02B7/04

摘要：PROBLEM TO BE SOLVED: To provide a lens barrel realizing the improvement of the rigidity of a guide barrel for guiding the movement of a lens unit in an optical axis direction without spoiling the assemblability of the lens unit. SOLUTION: The guide barrel 11 having a cylindrical circumferential wall 12 and a slit-shaped straight advance guide groove 13 made open at one end of the wall 12 in an axial direction is arranged in a rotatable cam barrel 2 having a gear 6 and cam grooves 4 and 5. The lens units 22 and 31 having cam followers 26 and 37 engaged in the cam grooves 4 and 5 through the guide groove 13 are housed to move along an optical axis O in the guide barrel 11. A ring 51 for the guide barrel having a spacer projecting part 53 fit in the open end 13a of the guide groove 13 is attached to the guide barrel 11. Thus, a situation that the diameter of the guide barrel 11 is reduced as the open end 13a of the guide groove 13 is narrowed is restrained by the projecting part 53. COPYRIGHT: (C)2005,JPO&NCIPI